Rotary pump.



A. E. TRIPP. ROTARY PUMP.

APPLICATION FILED AUG. a, 190s.

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ALBERT E.' TRIPP. OF INDIANAFGLS, INDIANA.

ROTARY PUMP.

Specification of Letters Patent.

Patented Sept. 2li., 11%9.

Application filed- Ang'ust. 3, 19583 Serial No. /l.

To all whom 'it may concern:

Be it known that l, ALBERT E. TRIPP, a citizen of the United States,residing at .Indianapolis, in the county of Marion and State of indiana.have invented certain new and useful improvements in Rotary Pumps and l'do declare the following to be .a full, clear, and exact description ofthe invention, reference being had to the accompanying drawings, and tothe figures of reference marked thereon, which form a part of thisspecification.

This invention relates to the class of pumps that are designed to raisewater from wells, theinvention having reference more particularly to apump that is adapted to be used in wells of considerable depth and forraising considerable volumes of water, the

pump being-adapted to be used either in driven wells or in excavatedwells and also iin cisterns or elsewhere. l The object ofthe inventionis to provide a highly eflicient and cheaply constructed pump that willbe durable and economical in use.

The invention consists in an improved A-pump comprising a tube, arotative shaft in the tube provided with a plurality of impellers ofnovel form of construction, and a plurality of'sets of curved and flaredguide arranged in the tube and supported in a stationary manner belowthe impellers; and the invention consists further in the novel parts,and combinations and arrangements of parts, as hereinafter particularlydescribed and defined in the accompanying claims.

Referring to thedrawings Figure l is a vertical. central sectional viewof the pump connected with a well and broken away in parts; Fig. 2, ahorizontal sectional view as at the pla-ne of the line A A in Fig. 1with the impeller in changed position rotatively; Fig. El, a sideelevation Vof one of the impellers on its shaft; Fig. 4. a horizontalsectional' view on the line B B in Fig. 1'; Fig. 5, perspective view ofone of the guides; and Fig. 6, a fragmentary vertical central sectionalview of the pump cage for guiding the impellers and shaft and also forsupporting the guides.

Similar reference characters in the drawings indicate correspondingelements. or features of construction.

In the drawings the numeral 1 vindicaties a section of the earth orgroundfin which is a well tube or casing 2' forming'the wall of l thewell that is open at its bottom to receive water from the earth. A cageis 'inserted' in the well removably oand may suitably comprise anysuitable number of sections of tubing as 3, l, o, 6 connected togetherin any suitable manner, and when the cage is intended to fit closelyinto the well tube the upper end of each section preferably is swaged,so as to form a relatively small end 7 that is inserted in the lowerenol of the adjacent section and secured thereto by screws 8 havingflush heads 9, so that. there will be no external projections on thecage which may be composed of any suitable metal.

'l'he cage is continuous from the uppel portion of the well down to asullici'ent depth to extend below7 the water level, and when used inrelatively close connection with the well tubing neednot be water tight,nor have water tight joints where the sections are connected together.ybut the cage may be made water tight throughout its length in case thepump is to be used in a .well having large diameter, so that thecage'would not be close to the` wall of the` well, in which case thecage would serve as a pump barrel in which the atcr would be raised.'l'Vhen the cage is constructed so as to fit closely into the well tubeit is obvious that the cage may be. more or less open in parts, vifdesired,

in order to facilitate construction thereof of` suitable ball-race or acup, a cone-bearing 17 being arran ed on the bearing-balls. The housingpreferably has a bottom plate 18 at,- tached thereto through whichextends a rotative shaft 19 which is secured in the conebearing 17 by apin 20, the shaft extending downl into the well nearly to lthe lower endof the'cage. lA pulley 21 is secured to the shaft 19 above thecone-bearing by a pin 22, and the guide collar 2l is secured to theshaft beneath the bottom plate 18`by a set screw 22', but if desired thecollar may in some cases be dispensedwith.

In order to lift the water from the well a suitable number of impellersare secured to the shaft at suitable distances apart, the impellersbeing all alike and 'each comprising essentially a hub and one ormorespirally arranged blades onA the hub, the peripheral portions of theblades being adapted to- `engage the inner side'of the cagefor-guidance. The lowermost impeller has a hub 23 secured to the lower-endportion of the shaft by a set screw 24, a blade 25 extendingspirally about a portion of the hub and having al1 upturned flange 26and'also a downward extending flange 27. Farther up on the shaft asimilar hub 2,8 is secured thereto by a set screw 29, there being spiralblades and 30 on the hub, and farther up on -the shaft a hub 31 issecured to the shaft by a set screw 32, spiral blades 33 and 33 beingattached to the hub. At asuitable distance higher up a hub 34 is securedto the shaft by a set screw 35 and hasta spiral blade 36 thereon. Eachimpeller preferably comprises two blades, as 33 and 33, arranged withthe uppermost ends in one horizontal plane at opposite sides of theshaft ,and the lowermost ends of the blades in another plane at oppositesides of the shaft, so that the blades may act similarly to a boring-bitor twisted augur. The peripheral edges of'the blades y side of the cage.

are broadened in order to provide bear-ing surfaces .of suitable extentagainst the inner This is accomplished by formino' the flanges 26 and 27on the edges of the Lblades, and it is obvious that either one of .theflanges might be omitted and that 'm lieu of the flangesthe bladesthemselves may be made sufficiently thick for the pur pose, orthe edgesthereof otherwise broadened to afford ampley hearing surfaces. In`

the smaller sizes of pumps, however,- the blades may be relatively thinthroughout.

Just below each impeller a set. of guides ,is suitably secured to. theinner side ofthe cage and each set comprises a suitable num- ,ber ofcurved guide wings, as 37, 38, 39

formed of sheet metal, each wing having one end thereof secured to; thecage and curved away from the cage toward the shaft 19, the lowerportion of each wing being curved inwardly more 4than the upper-portionof the wing, so that each wing is flaring and designed to cause therising waterto flow upward past the inclined sides of the wings. wings40, 41, 42 arranged higher up 1nI the cage, the wings of this set'having thefupper portions thereof` flared away from'they shaft to agreater extent than the wings bethose. below.-

Another set o f guides comprises low. Farther up inthe cage is anotherset of guide wings 43, 44, 45 that have their upper portions flared awayfrom the shaft'stl l .more than those next below, and. it is designedthat each higher' sety of wlngs in 'a pump'shall be ared outwardly to agreater degree than those next below, in order thatv thev water may haveits motion quickened in progression toward'the outlet of the pump. Eachguide wing, as 38, has rivet holes 46 in one of its, edges by which itis secured to the cage preferably by rivets 47.

In practical? use any suitable power may 'be applied to the pulley orwheel 21 andthe shaft is driven in the direction indicated by the.arrows at a high rateof speed; the blades of the imp'ellers all forcethewater upward and also cause'the water to move slightly .in a circulardirection and being impelled 1 against the guide wings will thereby becaused to rise, so that increased efficiency of the pump will result.

Having thus describedy the invention, what is claimed yas new, is-

1. In a pump, the combination with' a t-ubular cage, a shaft rotatablein the cage, and' a'n impeller secured to the shaft to rotate therewith,of a plurality of guides comprising sheet metal wings that are securedto the inner side of the cage below the impeller and are curved atltheir lower ends inward and extend substantially to the shaft, saidwingsv being curved inward at their upper ends to4 points approximatelymidway between the cage and the shaft,.both sides of each wing standingat angles to the axis o f the shaft. 4 y, 2. In a pump, the combinationwith a tubular cage, a shaft rotatable in the cage,and a plurality ofimpellers secured to dierent parts of the shaftto rotate therewith, of aplurality of sets'of guides, each set comprismg sheet. metal wings th tare secured to vthe inner side of the cage below an impeller and curvedinward toward the shaft, the lower ends of the wings extending inward toa greater extent than the upper ends of the wings so that the wings arebodily inclined, and the' wings of the sets progressively upward beinginclinedl in greaterdegree than

